JP2002039607A - Air outlet for low temperature air-conditioning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air outlet for low temperature air-conditioning having two functions of vapor condensation prevention and horizontal cold air supply being further optimized. SOLUTION: The air outlet for low temperature air-conditioning flows low temperature air from an air-conditioner incorporated in a ceiling. Further, the air outlet is provided with a housing 1 the lower end of which fronts on the internal part of a room and in which a chamber 1a is formed, and a flow control body 4 situated at the internal part of the housing 1. The flow control body 4 discharges cool air approximately to a spot right below from the central part of the chamber 1a, to a spot approximately right below as a slow swirl flow from the periphery of the central part of the chamber 1a, and to a spot approximately horizontally as a strong swirl flow from the peripheral edge of the chamber 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-temperature air-conditioning air outlet for supplying cold air to a room, and more particularly to a low-temperature air-conditioning air outlet capable of reliably preventing dew condensation due to contact with room air.

[0002]

2. Description of the Related Art In recent years, as an air outlet for indoor air conditioning, 1
A low-temperature air-conditioning air outlet that blows cold air of about 0 ° C. into a room with a small air volume has come to be used. Various types of low-temperature air-conditioning air outlets have been proposed in the past, but the most important of these functions is not to blow cold air locally just below the air outlet, but to incorporate the air outlet. Horizontal blowing (radiation) along the lower surface of the ceiling,
The purpose of the present invention is to prevent dew condensation due to contact with indoor air and to prevent condensation water droplets from falling.

In low-temperature air conditioning, dew condensation at the air outlet is a conventional problem. In an air outlet for low-temperature air conditioning, when the temperature difference between the air outlet temperature immediately after the start of operation and the room temperature is large, dew condensation tends to occur at the air outlet. . Even in an environment where outside air is likely to enter, such as the first floor of a building, dew condensation is also likely to occur due to the difference between the temperature of the cool air from the outlet and the temperature inside the floor.

[0004] In order to solve the problem of dew condensation at the outlet, a conventional outlet designed to prevent dew condensation has a structure in which cool air from the outlet extends over the entire outlet to form a cool air layer, and indoor air is generated. The basic design is to provide a cool air distribution that does not contact the outlet. That is, the occurrence of dew condensation is suppressed by preventing the high temperature air in the room from coming into contact with the low temperature air outlet.

[0005]

However, it is important that the air outlet for low-temperature air conditioning be blown horizontally along the lower surface of the ceiling in addition to preventing dew condensation. That is, it is necessary that the air outlet for low-temperature air conditioning has an important function of preventing dew condensation and horizontal blow-out of cool air.
Although low-temperature air-conditioning air outlets have been developed in pursuit of the functions of preventing dew condensation and horizontal blow-out of cold air, the general concept is to meet the functions of both dew condensation prevention and cold-air diffusion. The situation is not yet reached.

Accordingly, an object of the present invention is to provide a low-temperature air-conditioning air outlet in which both functions of dew condensation prevention and horizontal blowing of cold air are more optimized.

[0007]

According to the present invention, there is provided a low-temperature air-conditioning blow-out port which is incorporated in a ceiling and blows low-temperature air from an air conditioner, wherein a housing having a lower end facing a room and a chamber formed therein, A flow control body provided in the interior of the housing, wherein the flow control body is substantially directly below the center of the chamber, almost directly below as a gentle swirling flow from around the center of the chamber, and at the periphery of the chamber. It is characterized in that a flow control body for discharging the cool air substantially horizontally from the section as a strong swirling flow is provided.

[0008] In the present invention, since the distribution of the cool air can be blown from directly below the center of the chamber to the periphery thereof, indoor air does not come into contact with the surface of the lower end of the outlet, thereby preventing the occurrence of dew condensation. In addition, since the cool air is blown out from the peripheral portion of the chamber as a strong swirling flow in the horizontal direction, good radiation can be achieved.

[0009] In the present invention, the flow control body has a flow passage hole at the center for creating a flow going directly downward, and a first opening for creating a gentle swirling flow around the flow passage hole. A second opening that creates a swirling flow having a larger opening area than the first opening around the first opening, and further, at an opening edge of the first opening and the second opening, The first for turning the cool air from the neck side into a swirling flow
The second vane and the second vane can be configured to rise in an oblique posture toward the downstream side or the upstream side.

In this configuration, the cool air from the first and second openings can be swirled by the first and second vanes. Therefore, in addition to the flow flowing directly downward from the central channel hole, the first
The lower end of the outlet can be covered with the distribution of cool air by the weak swirling flow due to the opening and the strong swirling flow due to the second opening, and the occurrence of dew condensation can be prevented.

[0011] The flow control body may have a structure in which a plurality of blade structures are provided with a base having a twist angle of substantially zero at the center and a twist blade having a twist angle gradually increased from the base.

In this configuration, the cool air passing through the base having a twist angle of substantially zero flows right below, and the cool air passing through the twist blades is swirled. Can be covered with the distribution of cool air, and the occurrence of dew condensation can be prevented.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a low-temperature air-conditioning air outlet according to the present invention, FIG. 2 is a cutaway plan view, and FIG. 1 corresponds to a section taken along line AA of FIG.

In the drawing, a cylindrical neck 2 is connected to the center of the upper end of a housing 1 having a rectangular planar shape incorporated in a ceiling plate 50 and having a chamber 1a formed therein, and a face 3 on the lower end surface of the housing 1. Fixed. The neck 2 is connected to a flow path by a duct of an air conditioner (not shown) for supplying cool air, and communicates with the chamber 1 a of the housing 1. Face 3 is a square hole 3a
Are uniformly distributed, so-called punching face type, and do not give the directivity of the flow to the blown air.

A flow controller 4 is provided inside the chamber 1a of the housing 1 coaxially with the neck 2. FIG. 3 is a schematic perspective view of the flow control body 4. The flow control body 4 has a flange 4 fixed to the inner wall of the housing 1 by welding or the like.
a, a flow passage hole 4b opened in the center, a plurality of first openings 4c formed in a substantially fan shape around the flow passage hole 4b, and a first opening formed along one edge of the first opening 4c. Vane 4d,
A second opening 4e arranged around the first opening 4c, and a second vane 4 raised along one edge of the second opening 4e.
f.

The first openings 4c are substantially fan-shaped at eight locations around the flow passage hole 4b at the center of the flow control body 4, and correspond to the first openings 4c by press punching. Vane 4d is formed. The second opening 4e is also fan-shaped, and has a much larger opening area than the first opening 4c. The second vane 4f is formed into a fan shape corresponding to the second opening 4e by press punching. FIG. 4 is a front view of a main portion showing the rising angles of the first and second vanes 4d and 4f. The rising angle α of the first vane 4d from the flange 4a is 7
0 ° to 80 °, and the rising angle β of the second vane 4f is about 45 °. The first and second vanes 4d and 4f are arranged so as to rise counterclockwise around the center of the flow control body 4, as shown in FIG.

In the embodiment, the flow control body 4 is incorporated into the housing 1 as a single member. However, the flow control body corresponding to the structure shown in FIG. It goes without saying that the body may be formed. Further, an opening for connecting the neck 2 may be provided in the housing 1, and a flow control body corresponding to the configuration in FIG. 3 may be formed at the lower end of the neck 2. In short, what is necessary is just to constitute the flow control body which flows the cold air which flows into the chamber 1a of the housing 1 from the neck 2 horizontally just below and around it.

In the above configuration, when cool air is supplied to the neck 2 from the air conditioner, the cool air passes through the flow control body 4, reaches the chamber 1a, and is discharged from the hole 3a of the face 3. The cool air passing through the flow control body 4 is blown out from the central flow passage hole 4b, from the first opening 4c, and from the second opening 4e. The flow from the flow path hole 4b reaches the inside of the chamber 1a as a vertical flow, passes through the hole 3a of the face 3, and is discharged downward. Further, the cool air passing through the first opening 4c is swirled counterclockwise in FIG. 2 by the first vane 4d, but the opening area of the first opening 4c is small and the first vane 4d is also swirled. Because it ’s small,
It is discharged right below with a small swirling force along the vertical flow from the flow passage hole 4b. Further, the cool air flowing through the second opening 4e having a large opening area is large second vane 4f.
As a result, a swirling flow is forced in the counterclockwise direction in FIG. The flow rate of the swirling flow from the second opening 4e is much larger than the flow rate of the cool air passing through the flow path hole 4b and the first opening 4c, and the swirling flow by the large vane 4f is strong. The cool air that has escaped flows so as to expand around the housing 1 in a circular shape, and becomes a horizontal flow along the ceiling plate 50.

FIG. 5 is an explanatory diagram showing an outline of the flow distribution of the cool air blown by the flow controller 4 and the flow of the indoor air flow.

The cool air from the flow passage hole 4b of the flow control body 4 flows in the direction of the arrow P in the figure, and is supplied from the hole 3a of the face 3 directly downward. Further, the cool air from the first opening 4c flows in the direction of the arrow Q while swirling, and the cool air from the second opening 4e flows in the direction of the arrow R with a strong swirling flow. The lengths of these arrows P, Q, and R correspond to those proportional to the flow rate, and the distribution of the cool air from the holes 3a of the face 3 is a wavy line in the figure. This distribution of the cool air covers the entire lower end surface of the face 3 and the housing 1 around the face 3, and becomes a horizontal flow along the lower surface of the ceiling plate 50 due to the strong swirling flow in the direction of the arrow R from the second opening 4 e. Due to such a distribution of the cool air, no cold draft is generated, and the room air attracted to the outlet side flows into the layer of the cool air and returns downward as shown by an arrow S in the drawing. Therefore, the room air does not come into contact with the face 3 at the lower end of the housing 1 and the occurrence of dew condensation is prevented.

Further, since the cool air from the second opening 4e is forcedly swirled by the second vane 4f, the cool air blown in the direction of arrow R in FIG. 5 occupies a circular area around the housing 1. . Therefore, in a conventional air outlet such as a square anemo, the supply distribution of the cool air from the four sides of the anemo has been obtained, but a cool air distribution having a circular shape can be obtained even if the housing 1 has a square planar shape. For this reason, regardless of whether the housing 1 has a circular or square planar shape, cold air can be supplied to a circular area centered on the air outlet, and particularly, a rectangular planar housing is likely to be generated at a corner of a square. It can prevent dew condensation.

Here, in this embodiment, the neck 2 is located above the upper end of the housing 1 and does not protrude downward from the upper end of the housing 1 so as to wrap around the flow control body 4. For this reason, the neck 2 does not interfere with the diffusion of the cool air by the flow controller 4, and the cool air in the chamber 1a of the housing 1 is sufficiently diffused as shown in FIG. Therefore, the flow field of the cold air from the inside of the chamber 1a toward the bottom and the flow in the horizontal direction are favorably formed, and the occurrence of dew condensation on the face 3 is reliably prevented.

FIG. 6 and subsequent figures show another embodiment.
The same components as those shown in FIG. 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 6 shows an example in which the housing 1 is formed in the shape of a quadrangular pyramid, and the chamber 1a is formed so as to occupy the inner volume of the truncated quadrangular pyramid. Also in this example, the supply distribution of the cool air by the flow control body 4 is substantially the same as that shown in FIG.
However, since the housing 1 has a flared shape,
Since the diffusion flow of the cool air from the flow control body 4 flows so as not to separate from the inner wall of the housing 1, the pressure loss can be reduced. In addition, the diffusion of the diffusion flow from the lower end of the housing 1 is promptly promoted by the flared shape of the housing 1.

FIG. 7 shows that the lower end of the housing 1 has a flared shape. Also in this example, the diffusion flow from the lower end of the housing 1 is promoted, and the radiation along the ceiling plate can be generated quickly. .

FIG. 8 shows a supporting rail 51 arranged on the ceiling.
In order to accommodate the lower end of the housing 1 between them, the lower end of the housing 1 is made smaller and narrowed in cross section. Thus, even if the lower end side of the housing 1 is narrowed, the cool air by the flow control body 4 is swirled as in the previous example, and the distribution of the cool air as shown in FIG. 5 can be formed. That is, even if the shape of the housing 1 downstream of the flow control body 4 is slightly changed, the cool air can prevent dew condensation as a flow distribution including the entire area of the face 3, and can favorably include the corners of the square face 3. Dew condensation is prevented.

FIG. 9 shows an example in which the flow control body 4 is provided upside down with respect to the same housing 1 shown in FIGS. With this configuration, the first and second vanes 4d and 4f can enter the neck 2 and turn the cool air flowing from the neck 2 into the chamber 1a into a swirling flow. Even when the flow control body 4 is turned upside down as described above, the turning direction of the cool air is the same as that in the examples of FIGS.

Even when the flow control body 4 is turned upside down as described above, the cool air is supplied just below the flow path hole 4b of the flow control body 4 shown in FIG. 4
The cool air swirled by f is blown out from the hole 3a of the face 3, and the supply distribution of the cool air similar to that shown in FIG. 5 can be obtained. And, by adopting a configuration in which the neck 2 does not protrude below the lower end of the flow control body 4, the swirling flow in the chamber 1a is favorably promoted,
High dew condensation prevention effect can be maintained.

FIG. 10 shows a configuration in which the flow control body 4 is suspended via the plurality of fixtures 5 in the configuration of FIG. 9 so as to be positioned inside the chamber 1a. By arranging the flow control body 4 in the chamber 1a in this manner, it is possible to blow cool air from the hole 3a of the face 3 while maintaining the rectification effect of the flow control body 4 more strongly than in the example of FIG. .

FIG. 11 shows a housing 1 having the structure shown in FIGS.
FIG. 9 shows an example in which the face has a different structure in the apparatus provided with the neck 2 and the flow control body 4 together with the distribution of the supplied cool air.

The face 6 in this example is provided with a punching metal 6a having a large number of minute holes formed in the center thereof, and an annular guide 6b with a flow path directed obliquely outward around the punching metal 6a. It is. With such a face, the flow path hole 4b of the flow control body 4
The cool air flowing from directly below (see FIG. 3) passes through the holes of the punching metal 6a and flows into the room, and the swirling flows from the first and second vanes 4d and 4f pass through between the guides 6b and are blown into the room. . In this case, although the cool air is sufficiently swirled by the first and second vanes 4d and 4f, the cool air is further diffused by the guide 6b forming the outward flow path, and the radiation along the ceiling plate 50 is formed. The flow can be generated more effectively.

FIG. 12 shows an example of a structure in which a duct from a cool air supply source is connected to a side surface of a housing.

In order to connect the duct from the side, the housing 1 has a larger dimension in the vertical direction as compared with the example in FIG. 1 and the like, and the neck 2 protrudes from the right side of the housing 1. The flow control body 4 is arranged on the lower side in the housing 1 and is shown in FIG.
The first and second vanes 4d and 4f are assembled in a posture in which the first and second vanes 4d and 4f face upward, as in the case shown in FIG.

Even when such a neck 2 is arranged on the side surface of the housing 1, the supplied cool air is directed downward by the flow control body 4 similarly to the example of FIG.
Are blown out from the hole 3a of the face 3 as a flow swirled by the vanes 4d and 4f.

Here, when the neck 2 is arranged on the side surface of the housing 1, the air that has flowed into the housing 1 from the neck 2 hits the side surface of the facing surface and flows downward as it is. The blowout flow rate is higher on the side. Therefore, the flow rate from the right end of the face 3 in FIG.

On the other hand, as shown in FIG. 13, if an arcuate guide 7 is provided in the housing 1 so that the cool air from the neck 2 can be supplied to the flow control body 4 right below, the face can be changed. The distribution of the cool air toward 3 can be optimized. Therefore, even if the neck 2 is arranged on the side surface of the housing 1, dew condensation does not occur on a part of the face 3.

Further, even when the rectifying grid 8 is provided in the housing 1 as shown in FIG. 14 or the punching metal 9 is provided as shown in FIG. 15, the cool air from the side neck 2 is flowed evenly. 4, the formation of dew on a part of the face 3 is similarly prevented.

FIG. 16 is a schematic perspective view showing an example in which a flow control body of another form in place of the flow control body 4 shown in FIG. 3 is arranged on the neck 2, and FIG. 17 shows details of the flow control body in the example of FIG. (A) is a plan view and (b) is a front view.

The flow control body 10 in this example has four cruciform blades. The center of these blades is a base 10a having a zero twist angle as shown in FIG. A torsion blade portion 10b which is connected to the base portion 10a and has a twist angle gradually increased toward the outer peripheral end.

In the configuration in which such a flow control body 10 is provided inside the neck 2, the cold air flowing downward through the center of the cross section of the neck 2 passes through the base portion 10a where the twist angle is zero. Flows directly below. And
The cool air flowing along the twisted blade portion 10b is turned into a swirling flow by the twisting of the twisted blade portion 10b, and the chamber 1
It is discharged from the lower end of a so as to be a horizontal flow. Thus, even in the case of the cross-shaped blade flow control body 10, the same function as the flow control body 4 shown in FIG. 3 can be provided,
It is possible to prevent condensation on the face disposed at the lower end of the chamber 1a.

The flow control body 10 is a single cross-shaped four
Although a single blade is used, the effect of preventing dew condensation can be similarly achieved with more than six blades, and the number of blades can be arbitrary.

[0043]

According to the present invention, a layer of cold air can be formed by the flow control body so as to cover all of the face and the lower end of the housing. Is prevented. In addition, since the cool air is blown out by forcibly turning, the vector of the flow trying to diffuse to the surroundings is larger than the downward flow of the cool air, and a good horizontal flow along the ceiling can be realized, and a good air conditioning space without cold draft Can be formed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part when a low-temperature air-conditioning air outlet according to the present invention is incorporated in a ceiling plate.

FIG. 2 is a cutaway plan view of the low-temperature air-conditioning air outlet of FIG.

FIG. 3 is a schematic perspective view of a flow control body.

FIG. 4 is a schematic view of a main part showing a relationship between rising angles of a first vane and a second vane.

FIG. 5 is a schematic diagram for explaining a distribution of cold air and a flow of room air by a low-temperature air conditioning outlet.

FIG. 6 is a sectional view of a low-temperature air-conditioning air outlet having a housing formed in a truncated quadrangular pyramid shape.

FIG. 7 is a cross-sectional view of a low-temperature air-conditioning air outlet having a lower end of a housing formed in a truncated quadrangular pyramid shape and having a flared shape.

FIG. 8 is a cross-sectional view of a low-temperature air-conditioning air outlet provided with a neck having an increased internal volume.

9 is a cross-sectional view of a low-temperature air-conditioning air outlet in an example in which the flow control body is arranged upside down in the housing having the configuration shown in FIG.

FIG. 10 is a cross-sectional view of a low-temperature air-conditioning air outlet in which an inverted flow control body is positioned inside a chamber via a plurality of fixtures.

FIG. 11 is a cross-sectional view showing a low-temperature air-conditioning air outlet with a distribution of cool air in an example in which a face having a punching metal and an outward guide is provided in the configuration of FIG. 1;

FIG. 12 is a cross-sectional view of a low-temperature air-conditioning air outlet showing an example in which a neck is arranged on a side surface of a housing, and a flow control body is installed upside down in a chamber.

13 is a cross-sectional view of a low-temperature air-conditioning air outlet provided with a guide for guiding cool air from a neck toward a flow control body in the configuration of FIG. 12;

14 is a cross-sectional view of a low-temperature air-conditioning air outlet provided with a rectifying grid in place of the guide in the example of FIG.

FIG. 15 is a cross-sectional view of a low-temperature air-conditioning air outlet provided with a punching metal instead of the guide in the example of FIG. 13;

FIG. 16 is a schematic perspective view showing an example in which a neck is provided with a cross-shaped blade flow controller.

17 is a detailed view of the flow control body in the example of FIG. 16, wherein (a) is a plan view and (b) is a front view.

[Explanation of symbols]

 Reference Signs List 1 housing 1a chamber 2 neck 3 face 3a hole 4 flow control body 4a flange 4b flow passage hole 4c first opening 4d first vane 4e second opening 4f second vane 5 fixing bracket 6 face 6a punching metal 6b guide REFERENCE SIGNS 7 guide 8 rectifying grid 9 punching metal 10 flow control body 10a base 10b twisted blade part 50 ceiling plate 51 rail

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takuya Shigematsu 1034 Wada, Sasaguri-cho, Kasuya-gun, Fukuoka F-term within Kyoritsu Airtech Co., Ltd. (Reference) 3L080 BE05 3L081 AA02 AA09 AB04 BA04

Claims (3)

[Claims] 1. A low-temperature air-conditioning blow-out port which is incorporated in a ceiling and blows low-temperature air from an air conditioner, the housing having a lower end facing the room and a chamber formed therein, and a flow control provided inside the housing. The flow control body is substantially directly below the center of the chamber, almost immediately below as a gentle swirling flow from around the center of the chamber, and substantially as a strong swirling flow from the periphery of the chamber. A low-temperature air-conditioning air outlet, which is configured to discharge cold air horizontally. 2. The flow control body is provided with a flow path hole at the center for creating a flow going directly downward, a first opening around the flow path hole to create a gentle swirling flow, and 1
Around the opening is provided a second opening having a larger opening area than the first opening to create a strong swirling flow, and further, an opening edge of the first opening and the second opening is provided at an opening edge from a neck side. 2. The low-temperature air-conditioning air outlet according to claim 1, wherein the first vane and the second vane for turning the cool air into a swirling flow are raised in an oblique posture toward the downstream side or the upstream side. 3. The flow control body according to claim 1, wherein the flow control body has a plurality of blade structures including a base having a twist angle of substantially zero at the center and a twist blade having a twist angle gradually increased from the base. Item 7. A low-temperature air-conditioning outlet according to Item 1.